Concepts don't come much more simple than the one that forms the basis of Leo. A man in a small room is filmed on a camera that has been tipped 90 degrees to give the impression that he's able to beat the laws of gravity. The audience watches, side by side, his performance live and a projection of the video feed. But through the ingenuity of director Daniel Brière and performer Julian Schulz, the character travels to emotional and physical places far beyond the confines of his small room.

When Leo (there's only one character, let's assume that is his name) first enters the room alone with his suitcase, all seems quite normal. Or it does in the projected version of the room, at any rate. In the live version, we find a man in a series of strange horizontal positions. He soon discovers that he's not only able to slightly bend the laws of gravity, but can completely throw them out the window.

At one stage music, from Sinatra to Tchaikovsky, bursts from his suitcase, moving him around the room, throwing him into different styles of movement. He then discovers a chalk stick and creates a world around him by drawing on the walls, these simple chalk drawings brought to dramatic life through projections

Schulz, the gravity-defying man at the centre of the show, is the second performer to present the piece after Tobias Wegner. His performance is not only full of impressive physical feats, but has a beautiful physical rhythm. He runs the gamut from lonely to exhilarated, but is at his best when he's surprised by his own discoveries. It's mindboggling to see the positions he gets into, especially in the final moments of the performance where he jumps from wall to floor (or floor to wall?) and back again.

It's a slick technical production too, with projections, lighting and music working with Schulz's performance to propel the story forward. Does it sometimes feel perhaps a little too slick and a little too much like a machine? Every illusion is flawlessly executed, but some of the spontaneity of discovery is lost.

But there's plenty of spontaneity in the enthusiastic response of the audience, especially the youngsters. There's a playfulness to the delivery and a warmth to the narrative that makes it a fantastic festival outing for families. A small festival gem.